Mixed spacer effect of hybrid white organic light-emitting diodes for reduced efficiency roll-off

The authors have demonstrated mixed spacer (MS) effect of hybrid white organic light-emitting diodes (HWOLEDs) for reduced efficiency roll-off using fluorescent blue emitter and phosphorescent red emitter. The optimized HWOLED with MS ratio (1:3) which was 4,4',4"tris (N-carbazolyl) triphe...

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Main Authors: Ji Hoon Seo, Jung Sun Park, Ja Ryong Koo, Bo Min Seo, Kum Hee Lee, Seung Soo Yoon, Young Kwan Kim
Format: Conference Proceeding
Language:English
Subjects:
Current density
Fabrication
Flat panel displays
Fluorescence
Glass
Indium tin oxide
Organic light emitting diodes
Organic materials
Phosphorescence
Voltage
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creator Ji Hoon Seo
Jung Sun Park
Ja Ryong Koo
Bo Min Seo
Kum Hee Lee
Seung Soo Yoon
Young Kwan Kim
description The authors have demonstrated mixed spacer (MS) effect of hybrid white organic light-emitting diodes (HWOLEDs) for reduced efficiency roll-off using fluorescent blue emitter and phosphorescent red emitter. The optimized HWOLED with MS ratio (1:3) which was 4,4',4"tris (N-carbazolyl) triphenylamine and bis-(2-methyl-8-quinolinolate)-4-(phenylphenolato)aluminium exhibited a maximum luminance of 42200 cd/m 2 at 8.5 V, external quantum and power efficiencies of 10.3% and 19.0 lm/W, and Commission Internationale de I'Eclairage coordinates of (0.40, 0.41) at 1 000 cd/m 2 .
doi_str_mv 10.1109/INEC.2010.5424940
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source IEEE Electronic Library (IEL) Conference Proceedings
subjects Current density
Fabrication
Flat panel displays
Fluorescence
Glass
Indium tin oxide
Organic light emitting diodes
Organic materials
Phosphorescence
Voltage
title Mixed spacer effect of hybrid white organic light-emitting diodes for reduced efficiency roll-off
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